xlsx to nested JSON

Is it possible to read a xlsx file and convert it to a nested JSON? (i’m using node.js)

For example, this table:

Name | City | Country Jon | New York | USA Jon | Kansas | USA Peter | Nevada | USA

to this JSON:

{
   "Name": "Jon",
   "Addresses": [
              {"City": "New York", "Country": "USA"},
              {"City": "Kansas", "Country": "USA"}
           ]
},
{
   "Name": "Peter",
   "Addresses": [
              {"City": "Nevada", "Country": "USA"}
	  ]
}

[reviewher]

As @RandomFractals discussed, there’s no simple general solution but you can always massage the output of sheet_to_json e.g.

var wb = XLSX.readFile("file.xlsx");
var data = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]);
var result = data.reduce((acc, row) => {
  var target = acc.find(x => x.Name == row.Name);
  if(!target) acc.push((target = {Name: row.Name, Addresses: [] }));
  target.Addresses.push({City: row.City, Country: row.Country});
}, []);

[ahmad-reza619]

OK thanks for explanation 👍 @RandomFractals